SAN DIEGO -- This Sunday is Earth Day, and it’s a good time to think about how you can protect the environment. From recycling, reducing waste, participating in cleanups, and more, we can all make changes for the better. Simple steps make a big difference.

All day Friday watch 10News as reporter Marti Emerald and the 10News team show you ways to help Sustain San Diego. We’ll show you how the Navy is tackling recycling, how inland trash is hurting our waterways and how local kids are spreading the "green" message.

Then watch ABC’s 20/20 at 10 p.m. for a special report, "Planet Earth 2007: Seven Ways to Help Save the World." Take a journey around the world to explore the current state of the environment.